Scala analysis: 697_S6
Semi-tempered tetrachord (4/3)**(3/20) * (4/3)**(3/20) * (4/3)**(7/10)
Generated by Scala: https://www.huygens-fokker.org/scala/
SHOW
0: 1/1 0.000000 unison, perfect prime 1: 74.707 cents 74.706750 2: 149.414 cents 149.413500 3: 4/3 498.044999 perfect fourth
SHOW/INTERVAL
0: 348.6315 cents 348.6315 1: 74.7068 cents 74.7068 2: 74.7068 cents 74.7068 3: 348.6315 cents 348.6315
SHOW INTERVALS
Interval class, Number of incidences, Size: 1: 2 74.70675 cents 1: 1 348.63150 cents 2: 1 149.41350 cents 2: 2 423.33825 cents Highest number of different intervals for one interval class: 2 Average number of different intervals per interval class: 2.00000 = 2
SHOW/LINE/CENTS INTERVALS
1 2 3 0.0 : 74.7 149.4 498.0 74.7 : 74.7 423.3 498.0 149.4: 348.6 423.3 498.0 498.0
SHOW/SPAN INTERVALS
Interval class, Interval span, Span size, Gap to prev. class: 1: 74.7068 .. 348.6315 cents 273.92475 cents 74.70675 cents 2: 149.4135 .. 423.3382 cents 273.92475 cents -199.21800 cents
SHOW DATA
Number of notes : 3 -- Interval properties -- Smallest interval : 74.70675 cents, class 1 Average step (divided formal octave): 166.0150 cents Largest one step interval : 348.63150 cents Average / Smallest step : 2.222222 Largest / Average step : 2.100000 Largest / Smallest step : 4.666667 Median interval of one step : 74.70675 cents, amount: 2 Most common interval of one step : 74.70675 cents, amount: 2 Least squares average step : 133.40491 cents, oct.: 400.21473 cents Scale is not proper Scale has Myhill's property chromas: 273.92475 cents and 199.21800 cents, ratio: 1.375000 generators: 1 of 74.70675 cents and 423.33825 cents ET pair of linear temperament : 26&40 Scale is distributional even Scale is a mode of a 20-tone equal temperament with octave 4/3 degrees: 3 6 20 generators: 3 and 17 Number of contiguous 1-step segments: 0 Step pattern alph. order: AAB Step pattern size order : SSL Interval vector is [ 0 0 2 0 0 1 0 0 0 0 ] Scale is sum-free (all different intervals) Scale is a Constant Structure, by a margin of 74.70675 cents Scale diversity : 0.796830 Lumma stability : 0.300000 Lumma impropriety factor : 0.400000 Rothenberg efficiency : 0.888889 redundancy: 0.111111 Efficiency x scale size : 2.666667 Number of different interval sizes : 4 = 2.00000 / class Number of one step interval sizes : 2 Highest interval variety : 2 Mean interval variety : 2.00000 = 2 Median interval variety : 2 Lowest interval variety : 2 Smallest interval difference : 74.70675 cents Most common intervals : 74.70675 cents & inv., amount: 2 Number of recognisable fifths : 0 Number of recognisable fourths : 0 Steps are increasing Formal octave complements present : 1 = 33.3333% 2/1 octave complements present : 0 = 0.0000% Limited inverse transpositions : 2 Inversional symmetry on degrees : 1 Inversional symmetry on intervals : 2-3 -- Rational properties -- Prime limit : 3 (not all pitches rational)
FIT/MODE
3: 0 1 2 N G T3 SD: 44.1841 c. M: 74.7068 c. 4: 0 1 3 N G T3 SD: 45.4651 c. M: 74.7068 c. 6: 1 1 4 N M DE S SD: 10.7162 c. M:-16.6015 c. 7: 1 1 5 N M DE S SD: 4.5927 c. M: 7.1149 c. 13: 2 2 9 N M DE S SD: 2.4730 c. M:-3.8311 c. 20: 3 3 14 N M DE S SD: 0.0000 c. M: 0.0000 c.
FIT/HARMONIC
1 x x 2 S SD: 701.9550 cents 2 x x 3 S SD: 203.9100 cents 3 x x 4 S SD: 0.0000 cents 4 x x 5 S SD: 111.7313 cents 5 x 6:7 S SD: 93.2287 cents 6 x 7:8 S SD: 58.7287 cents 7 x 8:9 S SD: 51.5967 cents 8 x 9:11 SD: 38.1047 cents 9 x 10:12 S SD: 16.4951 cents 10 x 11:13 SD: 23.2607 cents 11 x 12:15 S SD: 19.4625 cents 12 x 13:16 SD: 5.4204 cents 13 x 14:17 SD: 19.8493 cents 14 x 15:19 SD: 21.4312 cents 15:16 x 20 S SD: 18.5123 cents 16:17 x 21 SD: 20.3612 cents 17:18:19:23 SD: 18.5237 cents 18:19:20:24 S SD: 12.6729 cents 19:20:21:25 SD: 11.9883 cents 20:21:22:27 SD: 9.4331 cents 21:22:23:28 SD: 3.3213 cents 45:47:49:60 SD: 0.6891 cents 111:116:121:148 SD: 0.5244 cents 156:163:170:208 SD: 0.4764 cents 276:288:301:368 SD: 0.4142 cents 321:335:350:428 SD: 0.2882 cents 366:382:399:488 SD: 0.2111 cents 387:404:422:516 SD: 0.1847 cents 411:429:448:548 SD: 0.1772 cents 432:451:471:576 SD: 0.0976 cents 477:498:520:636 SD: 0.0399 cents